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2. Scenery wagon - Wikipedia

   en.wikipedia.org/wiki/Scenery_wagon

   A lift jack is fundamentally a lever that attaches to the scenery wagon platform with a hinge, with a caster mounted to the underside of the lever near the hinge. When no downward force is applied to the lever handle, the wagon rests securely on the stage; this effectively locks the wagon in place due to friction between the wagon platform and ...

3. Jack (device) - Wikipedia

   en.wikipedia.org/wiki/Jack_(device)

   Jack which can lift a mobile home. A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power. [1] The most common form is a car jack, floor jack or garage jack, which lifts vehicles so that maintenance can be ...

4. Caster - Wikipedia

   en.wikipedia.org/wiki/Caster

   A swivel caster with a wheel lock. The vertical swivel on this type of caster cannot be locked in position. Caster central locking mechanism on an old Stryker hydraulic stretcher. Shown in the locked position with the center cam rotated downward. Common inexpensive casters may include a brake feature, which prevents the wheel from turning. This ...

5. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

6. Swivel - Wikipedia

   en.wikipedia.org/wiki/Swivel

   The chromium in stainless steel creates a passivation layer on the surface that protects the steel from rusting. In low oxygen situations and/or warm water this passivation layer breaks down and corrosion will set in. Low oxygen will occur in crevasses which stary wet (cracks, welds, shackle threads, keel bolts, etc.) or confined spaces (swivel ...

7. Is red wine good for your heart? Consider this wisdom from a ...

   www.aol.com/red-wine-good-heart-consider...

   Dr. Jeremy London, a cardiovascular surgeon based in Savannah, Georgia, shares the important pros and cons of drinking red wine when it comes to heart health.